Home / 621,207.39-856,735.05-427,923.57

Finding the Fourth Proportional to 621,207.39, 856,735.05 and 427,923.57

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Solution

The fourth proportional to 621,207.39, 856,735.05 and 427,923.57 is: 590,168.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,207.39 : 856,735.05 = 427,923.57 : x
  2. Step 2: Convert to fraction form
    621,207.39/856,735.05 = 427,923.57/x
  3. Step 3: Cross multiply
    621,207.39x = 856,735.05 × 427,923.57
  4. Step 4: Simplify right side
    621,207.39x = 366,617,121,140.13
  5. Step 5: Solve for x
    x = 366,617,121,140.13/621,207.39
  6. Step 6: Final answer
    x = 590,168.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.